Mouth guard



FIG. 1 is a side perspective view of a mouth guard of the present invention;

FIG. 2 is a front perspective view thereof;

FIG. 3 is another side perspective view thereof;

FIG. 4 is a top perspective view thereof;

FIG. 5 is a bottom perspective view thereof; and,

FIG. 6 is a back perspective view thereof. 

The ornamental design for a mouth guard, as shown and described. 